Set of teeth for practice-work in dental surgery.



P. D. WEISSE.

SET OF TEETH FOR PRACTICE WORK IN DENTAL SURGERY.

APPLICATION TILED JAN.27,1913.

1, 1 08,290, Patented Aug. 25, 1914 INVENTOR.

t ZLL.

UNITED STATES r ignur OFFICE.-

FANEUIL D. 'W'EISSE, OF NEW YORK, N. Y.

SET OFTEETH FOR PRACTICE-WORK IN DENTAL SURGERY.

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To o/t IF/(Will. it IIMII/ Marc/n lie it known that I. Fasten. D. llnissn,

'a citizen of the limited States. residing at New York. in the county and State of New York. have invented a new and useful (loinhinat-ion in Sets of Teeth tor Practice-il ork in Dental Surgery, of which the following is a specification.

ta'ets of teeth to" practice work in dental surgery are known under the name of typodonts or odontotypes. There are typodonts made of celluloid blocks from which a collection of teeth are pressed and vulcanized into -uitablc shape, the base supporting the celluloid teeth liicing made of the same celluloid. The teeth upon such typodonts are not individually movable.

()dontotypes are described in ll. latcut Xo. TOWN). Aug. .26, 1902, consisting of a collection of teeth supported in sockets formed by a flexible material and. an o lontotype has been on the market in which teeth oi" white rubber or ivory are glued into sockets formed by vulcanized rubber. ()tlontotypes having a. base of flexible material do not afford the natural relation in the posi tion of the teeth after an operation has been performed by which an individual movement of the teeth was required; odontotypes constructed of teeth. set into sockets oi vulcanized rubber require. a separate vulcanization of the ruhbe and a special fastening of the teeth in the prepared sockets by glue or rivets.

It has been in use to set porcelain teeth or metallic teeth in rubber base plates for artificial dentures inorder to vulcanize these parts subsequently but it has never been attempted. to mount teeth made of celluloid directly into an elastic base body of guttapcreha.

The object of my invention is a set of single teeth for practising purposes made of celluloid or celluloid compound mounted into natural relation upon a base of guttapercha.

Figure l. of the accompanying drawing shows the gum surface of a base body for upper teeth. Fig. 3 is the facial view of a set of single celluloid teeth unmounted. Fig. 3 is the top view of a base body for the re Specification of Letters Patent.

Application filed January 27. 1913.

Patented Ann. 23, 1914.

Serial No. 744.338.

ception of lower teeth. 4: and illustrate base bodies for upper and lower teeth with the teeth set into position. Fig. 6 shows in crosssecti on teeth, gutta -percha and metallic casing.

The reference letter, G, indicates the elastic substance which preteral'ily consists of amixture of the juice of guttzrpercha trees, sulfur and coloring ingredients. Preparzv tions of this kind known as elastic gutta. percha become plastic and can hev easily worked with a spatula at a. temperature of 80 to 100 degrees centigrade while they set to a desirable resistant mass at about 30 degrees without loosing the elasticity. It is well advisable to encircle such an elastic body by an open n'ietallic casing. M, through which the heat may be. distributed. to the gutta-percha substance held in the casing.

H: is essential that the elastic base body is not vulcanized as the i 'ulcaniaat-ion will remove the plasticity and thereby the possibility of molding. The setting of teeth in an elastic substance is briefly mentioned in my copending application for Letters Patent Serial No. 72?.276. filed Oct. 1, 1912. The method of fastening teeth consists simply in forcing the roots in the armed elastic mass. directing; them into natural relation upon an articulator and finishing the surrounding gutta-percha surface with a warm spatula. 'lleeth mounted in an elastic gottaporeha preparation may be moved individually by a separator as is required in the separation of two adjoining teeth in order to prepare cavities on the approximal surfaces; the base body oi elastic gutta- 'iercha cares to force theteeth hack in their original position after the separator is removed. Of great advantage is the mounting of single sets of teeth in a moldablc elastic base body for the prat'rtisin11- oi? crown and bridge work, by ext acting one or more teeth from a full set and filling the artificial alveolus with the same moldahle elastic gutta-percha substance. r hot spatula will easily join the additional gutta-percha with the original base gutta-percha thus forming one homo-- gone-oils mass. Teeth made of celluloid or celluloid compound are preferable to others as they can be formed from molds and thus obtain a perfect anatomical shape superior of gutta-perclia, said single celluloid teeth to that obtained by carving. set into said gutta-percha substantially as Having now fully described my invention described and shown.

I claim: FANEUIL D. WILUISSE.

In an artificial set of teeth for practice llitnesses:

work of dental surgery the combination of a HEXNRICH SGHWEITZER,

number of single celluloid. teeth and a. base I E. BINGHAM TRIPP.

Copies 0! this paig i z ay be obliz ifi fei' flv e cents each, by addressing the "Commissioner of Patents, wgshingtomfllc. 

